The traditional definition of syndromic ASD is a disorder with a clinically defined pattern of somatic abnormalities and a neurobehavioral phenotype that may include ASD. The diagnosis is typically confirmed by targeted genetic testing, eg, for trisomy 21 or fragile X syndrome (FXS).

What are the 3 types of autism?

The three types of ASD that will be discussed are: Autistic Disorder. Asperger's Syndrome. Pervasive Development Disorder.

What is syndromic and non-syndromic autism?

Syndromic autisms are caused by mutations in single genes and are manifested within the context of neurological syndromes, such as Fragile X Syndrome. In the last decade, genetic analyses of non-syndromic autism families revealed a number of genes that are linked to this class of autism.